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Power and Precision is a stand-alone statistical power analysis software package that is used for the calculation of a sample size for a planned study. The program features an unusually clear interface, and many tools to assist the user in developing an understanding of power analysis. It incorporates the ability to create tables, graphs, and reports with a single click.

Free trial Software Overview Power Analysis for Cluster Randomized and Multi-Site Trials

Power and Precision Testimonials

I've been in love with the earlier version of your program for years, but this one is really amazing.

– Brenda J. Shields
Columbus, OH

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researchers
For The
Researcher
This program is incredibly easy to learn and use. The interface is clear and intuitive. The interactive guide will walk you through all steps in the power analysis. The clear instructions ensure that power is computed correctly and the detailed report ensures that it is communicated properly.
researchers
For The
Academic Instructor
When students manipulate power interactively the concepts come alive and they “get it”. The detailed report serves as an example of how a power analysis should be communicated. The interactive guides, extensive Help system, and worked examples are invaluable resources.
researchers
For The
Statistician
Spend your time productively and present your results professionally. Create tables and graphs in a matter of seconds rather than hours and incorporate these in study plans for added emphasis and clarity.
“I’m using another program.
Why should I switch?”
  • The interface is a pleasure
  • The report is both detailed and clear
  • The table and graphs are created effortlessly, and they get it exactly right.

An indispensable resource for grant applications.

This program is universally acclaimed for its clear interface,
ease of use and computational accuracy.

researchers